Fire-extinguisher.



PATENTED JUNE 9, 1908.,

anventoz J G MASTIN FIRE EXTINGUISHER.

APPLIUATION FILED DEC. 23, 1907.

AVA 5 k I To all tohom it may concern:

JAMES G. MASTIN, CHICAGO, ILLINOIS.

FIRE-EXTINGUISHER.

Specification of Letters Patent.

Patented .Tune 9, 1908.;

Application filed December 23, 1907. Serial No.$07,72 5.

Be it known that 1, JAMES G. MASTIN, a citizen ofthe United States,residing at Chicago, in the county of Cook and' State of Illinois, haveinvented certain new and use-- ful Improvements inFire-Illxtinguishers,of which the following is a specification.

This invention relates to certain new and useful improvements in fireextinguishers, and it has for its object the production of a device ofthis character which is simple in construction, cheap to manufacture andefficient for the purpose for which it is designed.

. With these and other objects in view my invention consists In certainconstruct ons,

arrangements and combinations of parts the preferred form of which willvbe first described in connectionwith the accompanying drawings and thenthe invention particularly pointed out in the appended claims.

Referring to the drawings wherein the same part is designated by thesame reference numeral wherever it occurs Figure 1 is a perspective viewof a fireextinguisher; Fig. 2 is a central longitudinal section of thesame, certain parts being shown in elevation;

Fig. 3 is a detail perspective view of the cover plate with partsremoved and Fig. 4 is a detail perspective view of the part which forms.

the exhaust-tube of the pump.

1 designates the container or casing in the upper end of which issecured the ring 2. In

the form of my invention shown, the ring is secured, in the container bysoldering the upper edge of the container into the groove 3 formed nearthe lower edge of the ring. The

ring is provided. with the outwardly projecting circumferential shoulder4, formed with the cam surface 5, on its lower. side, and 'on its upperside at the'inneredgewith thepro-,

jecting bead 6. A

. 7 designates the filler plug which is ada ted to close the opening inthe ring. T isv plug on its upper surface is provided with transverselyextending ribs 8 which, at their ends, are provided wlth the openings 9,in which are mounted the pins 10 on which are journaled the lockinglevers 11. These levers are provided with handles 12 and the projectingcam portions 12 adapted to engagethe cam surface 5 on the underside of.the shoulder 4 to removably lock the filler plug in position.

The lower portion 13 -of the filler plug loosely fits within the ring 2while the main tube for the structure 22.

structure 22 -I provide an opening 24. 'through which air from the pumpmay pass out into the casing, the opening being pro-' portion thereofextends over the ring as shown. 1

14 is a circumferential channel cut-in the reduced portion 13 in which apacking washer 15 of rubber'or other suitablemate- ,rial is placed, thewasher being securely' held in position by the projecting ledgeltrori'the 1 lower side of the channel. It will be seen that when theplug islocked in position, as-

shown in Fig. 2, the bead 6 will be forced into the washer'15, thuscompressing the body of the washer and forming a tight joint.

17 isthe pump barrel whichis provided with the usual'piston 18 connectedto the" piston rod 19 having at its upper end"the operating handle 20.

' 21 is a plate bent upward at right aiigles adjacent to eachlongitudinal edge, forming an E-shaped structure 22, which is secure tothe side of the pump barrel as best shown in Fig. 2. This structureforms the e i st ump, and at its upperg-find lower ends is c osed bymeans of the ca 23.

Near the lower end of the pump barrel; ro-

'vide an opening 24 extending therethi" glh e and into the exhaust tubeformed Near the upper end of 'the vided with an ordinary flap valve 25to prevent the air from within the .casing being drawn into the pumpbarrel.

26 is a pipe passing through the uppelfporw tion of the casing 1- andextending .down nearly to the bottom of the casing."- This pipe, outsidethe casin has connected there'- to, a hose 2.7 provide on its outer endwith a nozzle -28.- s

' In the operation .of my invention the .container 1 is filled byremoving the filling?" lug 7, which carries the pum liquid. he pump isthen inserted the opening in the ring 3 and the filling piate locked 1npositionby pressing down the levers 11, causing the cam portion 12- topass tfiider the cam surface 5 on the lower side of thering 2. 'lthishermetically seals the filling plug in the ring. Upon operating the pumpair is *forcd through the conduit formed by the structure 22 out throughthe opening 24 and into the casing during. the down-stroke, while duringthe up-strokefof the piston the air is and then; 'ng' the casin withfire extinguishing or pther' prevented from passing back into the pump1R arrangement of parts Without departing from 0 the spirit thereof.

Wnat I claim as new and, desire to secure" by Letters Patent is.

1; .In a ,fire extinguisher, the combination with a casing, of a pumpcomprising a barrel barrel centrally mounted in the filler-plug,

said filler-plug being provided with a channel in its lower portion, arubber washer mount ed in said channel, a circumferential shoulder onthe ring, said shoulder being provided with a bead on'its upper surfaceand on its lower side with a cam surface, and levers pivoted to thefiller plug and having engagmg portions ada ted to engagethe camshoulders to ,lock the ller-plug'in position;

3.v In a fire extinguisher the combination with acasing, ofa pumpcomprising abarrel and i's'ton.removably'mo'unted in thecasing,

a tu e formed by a sheet of metal bent longi- 20 opening nearits lowerendwhichconnects the 5 and piston removably mounted wrthinthe A casing,a tube formed by a sheet of metal bent into U-shaped form and attachedat its longitudinal edges to the side of the-pump barrel, said barrelbeing provided with an" tudinally and attached at its lower edges to thesides of the pump barrel, said barrel beingfprovidedmthan o' enin ashort .distance above its'lower en connects the barrel and tube, saidtubebeing provided with anopening near the top thereof, and a valve forcontrolling the passage of air-there .7 barrel and tube, said tube beingprovided with through.

an opening near. the top thereof and a valve so for controlling thepassage of. air therethrough.

25 'In a-fire extinguisher, the combination with a casing, of a ringmountedupon the upper end of the casing and rovided with an openingtherethrough, a er-plug', a pump In testimony whereof I aflix signature,

in presence of 'two witnesses.

, :Witnessesi WILBUR F. M FFAT, FRANK M. BRAUGHT,

JAMES oi MASTIN; I

